4JTJ

Crystal structure of R117K mutant of 3-deoxy-D-manno-octulosonate 8-phosphate synthase (KDO8PS) from Neisseria meningitidis

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	297	20 mg/mL protein (in 10 mM BTP pH 7.5) mixed 1:1 with reservoir liquor containing 100 mM NaOAc (pH 4.6) and 0.6-3.0 M NaCl, cryoprotectant 20% glycerol and reservoir solution, Vapor diffusion, hanging drop, temperature 297K, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.32	47.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.468	α = 90
b = 85.37	β = 90
c = 163.023	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	IMAGE PLATE	RIGAKU RAXIS IV++		2005-12-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.75	39.93	98.8	0.041	14.1	4.07		113642

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.81	93		0.325	2.7	2.39	10577

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2QKF	1.75	39.55	113637	5687	98.5	0.1979	0.1965	0.2263	RANDOM	35.9257

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
0.54			0.18		-0.72

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.83
r_dihedral_angle_4_deg	18.805
r_dihedral_angle_3_deg	14.674
r_dihedral_angle_1_deg	5.7
r_mcangle_it	3.555
r_mcbond_it	2.487
r_mcbond_other	2.485
r_angle_refined_deg	1.797
r_angle_other_deg	1.698
r_chiral_restr	0.105

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.83
r_dihedral_angle_4_deg	18.805
r_dihedral_angle_3_deg	14.674
r_dihedral_angle_1_deg	5.7
r_mcangle_it	3.555
r_mcbond_it	2.487
r_mcbond_other	2.485
r_angle_refined_deg	1.797
r_angle_other_deg	1.698
r_chiral_restr	0.105
r_bond_refined_d	0.018
r_gen_planes_refined	0.011
r_bond_other_d	0.01
r_gen_planes_other	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7874
Nucleic Acid Atoms
Solvent Atoms	338
Heterogen Atoms	4

Software

Software
Software Name	Purpose
d*TREK	data scaling
d*TREK	data reduction
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.